Physics-Acceleration due to Gravity
NEET Physics Acceleration due to Gravity MCQ Question
Type: MCQ-numerical-Hard-Class 11
If the acceleration due to gravity at a depth d from the Earth's surface is g(d), which of the following expressions correctly represents this value?
A
g(d) = g(1 - d/R_E)
B
g(d) = g(1 - 2d/R_E)
C
g(d) = g(1 - d^2/R_E^2)
D
g(d) = g(1 + d/R_E)
Correct Answer
Option A
Detailed Explanation
The acceleration due to gravity at a depth d is given by g(d) = g(1 - d/R_E), where g is the acceleration due to gravity on the surface and R_E is the Earth's radius. This decrease is due to the reduced mass contributing to gravity at that depth.
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